Manufacturing- carpets



UNITED STATES PATENT OFFICE.

JOHN G. MCNAIR, OF WEST FARMS, NEW YORK.

MANUFACTURING CARPETS.

Specification forming part of Letters Patent No. 13,395, dated August 71855; Ressued December 23, 1856, No. 417.

section.

The same letters indicate like parts in all the figures.

The object of my invention is to produce a fabric having a figure on two surfaces like what is known as the ingrain carpets with the color of the figure reversed but without a figuring warp. And my said invention consists in producing the said fabric by mea-ns of a double weft one or both of which is parti-colored in combination with a dividing and ingraining warp operated by the jacquard, or equivalent therefor, and which divides the upper from the lower weft, and permits it to ingrain or appear, as the design may require, upon either face of the fabric, at the same time giving body to the fabric, when these are combined with a binding in warp operated by the harness, and which in binding in the weft threads draws them down between the dividing warps forming a rib like pile on both faces with the ribs running in the direction of the length of the fabric.

In mounting a loom for the production of my said new -fabric I first mount a set of twine or coarse thread warp c which is connected with, and operated by, a jacquard or other equivalent figuring apparatus. Between the threads of the warp a I interpo-se a binding in warp b of fine thread connected with and operated by the usual harness, or equivalent therefor, which is to be operated once for each pick or throw of the shuttle. The wooden weft c is mounted in two shuttles operated alternately, is one or both parti-colored, as heretofore for the production of figured fabrics, so that in producing such parts of the design as consist of two colors only, such as maroon and scarlet as at CZ and e one weft thread shall be Inaroon and the other scarlet for a suiiicient length to produce so much of the design as is composed of those two colors, each weft thread alternately appearing on the upper and under surface which is determined by lifting up, or letting down, certain portions of the dividing warp a by means of the jacquard, or equivalent therefor. As for instance, when the shuttle carrying the maroon weft thread is toI be thrown, the warp a is to' be let down whenever that colo-r is to appear on the top surface so that the shuttle may pass over it, the shuttle passing under the other portions of the said warp a. The harness is then operated to bind in this weft by the second or binding in warp b, and so with reference to the scarlet weft thread carried by the other shuttle. In this way the maroon weft appears on some parts of the upper surface and on other parts of the under surface, and vice versa, with the other weft thread, andwhen the design changes to other colors the weft threads must be colored to correspond.

By the means above specified the figure is reduced without re uirinfr a colored or parti-colored warp, the same eect being produced as in figures produced on brussels carpet in which the jacquard selects and brings to the surface the peculiar color required for any part of the figure, there being as many sets of warps as there are colors composing the design.

As the warps b are for binding in and are much finer than the dividing warps a the weft threads are drawn down between the threads of the warps u so that they are scarcely visible, and the weft threads are thus thrown up in ribs on the warp threads a. resembling the ranges of loops forming the brussels pile, but running in a longitudinal instead of a transverse direct-ion.

What I claim as my invention is- The fabric substantially as herein described, produced by the double wefts one or both of which is parti-colored, in combination with the two set-s of warps, one to divide and ingrain the wefts, and the other to bind in the wefts, substantially as and for the purpose specified.

JOHN G. MCNAIR.

Witnesses:

WM. H. BISHOP, ANDREW DE LACY.

[FIRST PRINTED 1912.] 

